Radiotracer study of the adsorption of urea on platinized platinum electrodes in the presence of different ions and organic compounds

G. Horányi, G. Inzelt, E. M. Rizmayer

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Radiotracer study of the adsorption of C-14 labelled urea on platinized platinum electrodes was carried out under different experimental conditions. The potential and concentration dependence was studied at low concentrations (10-5-10-3 mol dm-3) using M HClO4 supporting electrolyte. An anion-like adsorption behaviour was observed. The effect of different inorganic (HCl, H2SO4, H3PO4) and organic (oxalic, glyoxalic acids, etc.) additives was studied. Both C-14 labelled urea and Cl-36 labelled HCl were used for the study of the simultaneous adsorption of Cl- ions and urea. A decrease of the adsorption of urea was observed in the presence of the different anions. The extent of the decrease was connected with the adsorbability of the anions considered. The effect of oxalic acid on the adsorption was similar to that of anions. Chemisorption of alcohols and oxo compounds prevents the adsorption of urea. The increase of the urea adsorption with increasing potential indicates the oxidation of chemisorbed species. It has been shown that periodical changes in the urea adsorption may be observed in the course of potential oscillations occurring during galvanostatic oxidation of organic compounds.

Original languageEnglish
Pages (from-to)105-117
Number of pages13
JournalJournal of Electroanalytical Chemistry
Volume98
Issue number1
Publication statusPublished - Apr 10 1979

Fingerprint

Platinum
Organic compounds
Urea
Ions
Adsorption
Electrodes
Anions
Negative ions
Oxalic acid
Oxalic Acid
Oxidation
Chemisorption
Electrolytes
Alcohols

ASJC Scopus subject areas

  • Electrochemistry
  • Analytical Chemistry
  • Chemical Engineering(all)

Cite this

@article{2a8d959cb5dd4d8591244d3086bf2454,
title = "Radiotracer study of the adsorption of urea on platinized platinum electrodes in the presence of different ions and organic compounds",
abstract = "Radiotracer study of the adsorption of C-14 labelled urea on platinized platinum electrodes was carried out under different experimental conditions. The potential and concentration dependence was studied at low concentrations (10-5-10-3 mol dm-3) using M HClO4 supporting electrolyte. An anion-like adsorption behaviour was observed. The effect of different inorganic (HCl, H2SO4, H3PO4) and organic (oxalic, glyoxalic acids, etc.) additives was studied. Both C-14 labelled urea and Cl-36 labelled HCl were used for the study of the simultaneous adsorption of Cl- ions and urea. A decrease of the adsorption of urea was observed in the presence of the different anions. The extent of the decrease was connected with the adsorbability of the anions considered. The effect of oxalic acid on the adsorption was similar to that of anions. Chemisorption of alcohols and oxo compounds prevents the adsorption of urea. The increase of the urea adsorption with increasing potential indicates the oxidation of chemisorbed species. It has been shown that periodical changes in the urea adsorption may be observed in the course of potential oscillations occurring during galvanostatic oxidation of organic compounds.",
author = "G. Hor{\'a}nyi and G. Inzelt and Rizmayer, {E. M.}",
year = "1979",
month = "4",
day = "10",
language = "English",
volume = "98",
pages = "105--117",
journal = "Journal of Electroanalytical Chemistry",
issn = "0022-0728",
publisher = "Elsevier Sequoia",
number = "1",

}

TY - JOUR

T1 - Radiotracer study of the adsorption of urea on platinized platinum electrodes in the presence of different ions and organic compounds

AU - Horányi, G.

AU - Inzelt, G.

AU - Rizmayer, E. M.

PY - 1979/4/10

Y1 - 1979/4/10

N2 - Radiotracer study of the adsorption of C-14 labelled urea on platinized platinum electrodes was carried out under different experimental conditions. The potential and concentration dependence was studied at low concentrations (10-5-10-3 mol dm-3) using M HClO4 supporting electrolyte. An anion-like adsorption behaviour was observed. The effect of different inorganic (HCl, H2SO4, H3PO4) and organic (oxalic, glyoxalic acids, etc.) additives was studied. Both C-14 labelled urea and Cl-36 labelled HCl were used for the study of the simultaneous adsorption of Cl- ions and urea. A decrease of the adsorption of urea was observed in the presence of the different anions. The extent of the decrease was connected with the adsorbability of the anions considered. The effect of oxalic acid on the adsorption was similar to that of anions. Chemisorption of alcohols and oxo compounds prevents the adsorption of urea. The increase of the urea adsorption with increasing potential indicates the oxidation of chemisorbed species. It has been shown that periodical changes in the urea adsorption may be observed in the course of potential oscillations occurring during galvanostatic oxidation of organic compounds.

AB - Radiotracer study of the adsorption of C-14 labelled urea on platinized platinum electrodes was carried out under different experimental conditions. The potential and concentration dependence was studied at low concentrations (10-5-10-3 mol dm-3) using M HClO4 supporting electrolyte. An anion-like adsorption behaviour was observed. The effect of different inorganic (HCl, H2SO4, H3PO4) and organic (oxalic, glyoxalic acids, etc.) additives was studied. Both C-14 labelled urea and Cl-36 labelled HCl were used for the study of the simultaneous adsorption of Cl- ions and urea. A decrease of the adsorption of urea was observed in the presence of the different anions. The extent of the decrease was connected with the adsorbability of the anions considered. The effect of oxalic acid on the adsorption was similar to that of anions. Chemisorption of alcohols and oxo compounds prevents the adsorption of urea. The increase of the urea adsorption with increasing potential indicates the oxidation of chemisorbed species. It has been shown that periodical changes in the urea adsorption may be observed in the course of potential oscillations occurring during galvanostatic oxidation of organic compounds.

UR - http://www.scopus.com/inward/record.url?scp=0343893535&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0343893535&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0343893535

VL - 98

SP - 105

EP - 117

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

SN - 0022-0728

IS - 1

ER -